20789314225 has 9 divisors (see below), whose sum is σ = 25779643617. Its totient is φ = 16630874640.

The previous prime is 20789314211. The next prime is 20789314241. The reversal of 20789314225 is 52241398702.

The square root of 20789314225 is 144185.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 288369 + 20789025856 = 537^2 + 144184^2 .

It is not a de Polignac number, because 20789314225 - 2⁷ = 20789314097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 706507 + ... + 735343.

Almost surely, 2^20789314225 is an apocalyptic number.

20789314225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20789314225 is the 144185-th square number.

20789314225 is the 72093-rd centered octagonal number.

It is an amenable number.

20789314225 is a deficient number, since it is larger than the sum of its proper divisors (4990329392).

20789314225 is an frugal number, since it uses more digits than its factorization.

20789314225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57684 (or 28842 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 20789314225 in words is "twenty billion, seven hundred eighty-nine million, three hundred fourteen thousand, two hundred twenty-five".